# Questions tagged [electric-fields]

For questions that utilize the concept of electric fields (commonly denoted by the letter E), or for questions whose answers likely involve electric fields. More specific than the [electricity] tag, as questions about the phenomenon & theory of electricity do not necessarily involve the discussion of fields.

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### Does constructive interference automatically imply bright fringes at all times?

Suppose two waves interfere constructively at some point, in a double slit experiment set-up. This essentially means that the two waves have their peaks and troughs in sync with each other, and there ...
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### How is electric flux density independent of medium?

I understand that the scalar quantity, electric flux, $\phi$, is dependent on the medium. Also, mathematically, I understand how vector quantity electric flux density, $\mathbf{D}$, is independent of ...
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### Complex electric field in second order polarization

I am reading an introductory article on nonlinear optics. Here is what the part that's troubling me says: $$\tilde E(t) = Ee^{-i\omega t} + \text{c.c}$$ When this electric field is incident on a ...
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### Interaction between electron and electric field

Let consider that we are using parallel plates to create electric field. And let assume that there are small holes in both the plates (holes on both the plates are aligned). Now if we bring a electron ...
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### How does the electric field pattern looks like when current is moving inside the conductor and why this field is uniform?

We know that electric field is uniform inside a normal electric circuit consisting of some battery source and a conducting wire , $\mathrm{E}$ will be $\mathrm{E=V/d}$ , but I cannot think of a reason ...
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### Behavior of the electric field of an incoherent light wave

If I am not mistaken, an incoherent light wave is a light wave made out of waves with random phases: it consist of photons with random phases. Now I am wondering what we would see if we would ...
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### Why is the magnetic field around a straight current-carrying wire in concentric cirlces?

I have a question that, why are the magnetic field lines around a straight current carrying wire in the form of concentric circles? If the wire is carrying current, it is acting like a magnet. So ...
103 views

### Is it possible to find the proportionality constant in Gauss's law for an electric field without knowing Coulomb's law?

Using the definition of electric flux, and knowing that the electric flux through a closed surface is proportional to the charge enclosed (that proportionality constant being $\frac{1}{\epsilon_0}$)....